1.MessageHaveImageTag.java 判断内容是否有图片的自定义标签类.
2.myland.tld 自定义文件.
3.messageQueryList.jsp 显示页面.
显示效果:
MessageHaveImageTag.java
package com.myland.framework.tags; import java.util.List; import javax.servlet.jsp.JspException; import javax.servlet.jsp.JspTagException; import javax.servlet.jsp.tagext.TagSupport; import org.apache.commons.lang3.StringUtils; import org.springframework.web.context.WebApplicationContext; import com.myland.framework.util.collections.ListUtil; import com.myland.jp.common.service.MessageImageService; import com.myland.pojo.MessageImage; /** * * @author lengzl * @email [email protected] * @create 2015年7月30日 下午4:59:42 */ public class MessageHaveImageTag extends TagSupport{ private static final long serialVersionUID = -5234128142635788254L; /** * 信息id */ private String messageId ; /** * 存在图片返回1 不存在则返回0 */ public int doStartTag() throws JspException { try { WebApplicationContext appContext = (WebApplicationContext) pageContext.getServletContext().getAttribute( WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE); MessageImageService messageImageService = (MessageImageService) appContext.getBean("messageImageService"); String html = "0"; if(StringUtils.isNotBlank(messageId)){ List<MessageImage> messageImages = messageImageService.getMdListByPid(messageId); if(ListUtil.isNotEmpty(messageImages)){ html = "1"; } } pageContext.getOut().write(html);// 标签的返回值 } catch(Exception e) { throw new JspTagException("封装可编辑标签出现异常"); } return EVAL_BODY_INCLUDE; } /** * */ public int doEndTag() throws JspException { return EVAL_PAGE; } public String getMessageId() { return messageId; } public void setMessageId(String messageId) { this.messageId = messageId; } }
myland.tld
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN" "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd"> <taglib> <tlibversion>1.0</tlibversion> <jspversion>1.1</jspversion> <shortname>myland</shortname> <!-- 分页标签 --> <tag> <name>page</name> <tagclass>com.myland.framework.tags.PageTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>pagination</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>showType</name> <required>false</required> <rtexprvalue>false</rtexprvalue> </attribute> </tag> <!-- 显示系统配置的基本信息 --> <tag> <name>base</name> <tagclass>com.myland.framework.tags.BaseInfoTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>node</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> </tag> <!-- 将文本设置可编辑标签 --> <tag> <name>edit</name> <tagclass>com.myland.framework.tags.EditTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>message</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>url</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>paramName</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>type</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> </tag> <!-- 权限标签 --> <tag> <name>adminx_auth</name> <tagclass>com.lecheng.framework.tags.AuthTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>action</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> </tag> <!-- 取字典信息标签 --> <tag> <name>dic</name> <tagclass>com.myland.framework.tags.DicTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>code</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>name</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>value</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>defaultValue</name> <required>false</required> <rtexprvalue>false</rtexprvalue> </attribute> </tag> <!-- 截取字符串标签 --> <tag> <name>str</name> <tagclass>com.myland.framework.tags.StrTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>str</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>length</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>mark</name> <required>false</required> <rtexprvalue>false</rtexprvalue> </attribute> <attribute> <name>markLength</name> <required>false</required> <rtexprvalue>false</rtexprvalue> </attribute> </tag> <!-- 获取缓存中的string类型的值 --> <tag> <name>cache</name> <tagclass>com.myland.framework.tags.CacheTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>cacheType</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>key</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> </tag> <!-- 列表序号 --> <tag> <name>index</name> <tagclass>com.myland.framework.tags.PageIndexTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>qc</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> <attribute> <name>step</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> </tag> <tag> <name>cookie</name> <tagclass>com.myland.framework.tags.CookieTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>name</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> </tag> <!-- 根据messageid 判断是否存在图片.使用到的★★ --> <tag> <name>isHaveMessageImage</name> <tagclass>com.myland.framework.tags.MessageHaveImageTag</tagclass> <bodycontent>JSP</bodycontent> <attribute> <name>messageId</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> </tag> </taglib>
messageQueryList.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ include file="/common/common.jsp" %>
<script type="text/javascript" src="${pageContext.request.contextPath}/js/adminx/commonAll.js"></script>
<script type="text/javascript">
$(document).ready(function(){
// 进入页面时候title不在,查询时候的title不为空,
if($.trim("${qc.conditionsObj.title}")!=""){
$("#title").val("${qc.conditionsObj.title}");
}
});
</script>
<div id="showMessage" class="ui_tb">
<table id="tab" class="table" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
<tr>
<!-- <th>创建人</th> -->
<th nowrap="nowrap">创建时间</th>
<th nowrap="nowrap">创建标题</th>
<th nowrap="nowrap">创建内容</th>
<th nowrap="nowrap">操作</th>
</tr>
<c:choose>
<c:when test="${empty messages}">
<tr>
<td colspan="6" style="text-align: center">无相关记录</td>
</tr>
</c:when>
<c:otherwise>
<c:forEach items="${messages }" var="mes" varStatus="status">
<tr>
<%-- <td>${mes.crtPerson}</td> --%>
<td>${mes.crtTime }</td>
<td>${mes.title }</td>
<td>
${mes.cont }
<a href="javascript:view('${mes.id }','${mes.status }')">
<c:set scope="page" var="isHave">
<!-- 自定义标签的判断★ -->
<myland:isHaveMessageImage messageId="${mes.id}"></myland:isHaveMessageImage>
</c:set>
<c:if test="${isHave==1}">
<img alt="" src="${pageContext.request.contextPath }/images/adminx/common/img.jpg" style="border: 0px;" width="15"/>
</c:if>
</a>
</td>
<td>
<span class="chakan">
<%-- -新建时候可以看到审核 --%>
<c:if test="${mes.status == '0' }">
<a href="javascript:audit('${mes.id }')" class="edit">审核</a>
</c:if>
<a href="javascript:viewDetailInfo('${mes.id }')">回复明细</a> <%--,'${qc.pagination.pageNum}' --%>
</span>
</td>
</tr>
</c:forEach>
</c:otherwise>
</c:choose>
</table>
<br>
<div><myland:page pagination="${qc.pagination}" showType="002"/></div>
</div>